EFFECT OF HARDNESS ON THE SURFACE INTEGRITY OF AISI 4340 STEEL

被引：105

作者：

MATSUMOTO, Y

BARASH, MM

LIU, CR

机构：

[1] UNIV UTAH,MFG,SALT LAKE CITY,UT 84112

[2] PURDUE UNIV,SCH IND ENGN,W LAFAYETTE,IN 47907

来源：

JOURNAL OF ENGINEERING FOR INDUSTRY-TRANSACTIONS OF THE ASME | 1986年 / 108卷 / 03期

关键词：

METAL CUTTING - Stresses - MICROSCOPIC EXAMINATION;

D O I：

10.1115/1.3187060

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

The effect of hardness on the residual stress in the machined surface of AISI 4340 steel was studied. Chips produced during the machining also were examined and the surface structure was investigated using optical microscope and scanning transmission microscope. Reflection electron diffraction study revealed the existence of austenite in the white layer of the machined surface together with untempered martensite. The residual stress near the machined surface or hardened steel is a compressive stress, and it changes to tensile stress as the hardness decreases. Chip segmentation was observed when steel with hardness of over Rc 50 was machined.

引用

页码：169 / 175

页数：7